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Finding the Fourth Proportional to 65,751.52, 90,711.60 and 41,873.92

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Solution

The fourth proportional to 65,751.52, 90,711.60 and 41,873.92 is: 57,769.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,751.52 : 90,711.60 = 41,873.92 : x
  2. Step 2: Convert to fraction form
    65,751.52/90,711.60 = 41,873.92/x
  3. Step 3: Cross multiply
    65,751.52x = 90,711.60 × 41,873.92
  4. Step 4: Simplify right side
    65,751.52x = 3,798,450,281.47
  5. Step 5: Solve for x
    x = 3,798,450,281.47/65,751.52
  6. Step 6: Final answer
    x = 57,769.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.